Please Explain!!! I Know The Answer!!! 1. Summer squash plants with the dominant

Question

Please Explain!!! I Know The Answer!!!

1. Summer squash plants with the dominant allele C bear white fruit, whereas plants homozygous for the recessive allele c bear colored fruit. When the fruit is colored, the dominant allele G causes it to be yellow; in the absence of this allele (that is, with genotype gg), the fruit color is green. What are the phenotypes and proportions expected from intercrossing the progeny of CC GG and cc gg plants? Assume that the C and G genes assort independently.

2. The white Leghorn breed of chickens is homozygous for the dominant allele C, which produces colored feathers. However, this breed is also homozygous for the dominant allele I of an independently assorting gene that inhibits coloration of the feathers. Consequently, Leghorn chickens have white feathers. The white Wyandotte breed of chickens has neither the allele for color nor the inhibitor of color; it is therefore genotypically cc ii. What are the phenotypes and proportions expected from intercrossing the progeny of a white Leghorn hen and a white Wyandotte rooster?

Explanation / Answer

1)

Based on the given data, the genotypic notations are:

Here, C is dominant over c, and G dominant over g, so the genotypes of

So, the cross between CC GG x cc gg gives the progeny CcGg. The inter crossing of CcGg x CcGg gives following expected proportions phenotypes:

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects